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[[Image:Cathole.png|frame|right|A cathole may be dug with a trowel.]] | [[Image:Cathole.png|frame|right|A cathole may be dug with a trowel.]] | ||
Human waste is often a major source of environmental impact from hiking. These wastes can contaminate the watershed and make other hikers ill. [[Bacteria]]l contamination can be avoided by digging | Human waste is often a major source of environmental impact from hiking. These wastes can contaminate the watershed and make other hikers ill. [[Bacteria]]l contamination can be avoided by digging catholes 10 to 25 cm deep (4 to 10 inches, depending on local soil composition) and covering after use. If these catholes are dug at least 60 m (200 feet) away from water sources and trails, the risk of contamination is minimized. | ||
Many hikers warn other hikers about the location of their catholes by marking them with sticks stuck into the ground. | Many hikers warn other hikers about the location of their catholes by marking them with sticks stuck into the ground. | ||